Registration:Categories

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Slicer Registration Case Library: Examples & Tutorials

Speed

• Affine: The Affine Registration Module performs automated affine registration. This is being replaced by the Register Images Module that performs the same function.
• Bspline: The Deformable B-Spline Registration Module performs non-rigid automated image registration.
• Manual/interactive alignment can be done via the Transforms module, e.g. for initial alignment. See here for a tutorial and example dataset on Manual Registration

Precision

• The Register Images Module performs automated image registration, rigid to affine, based on image intensity similarities. It allows to focus the registration on a region of interest

Robustness

• The Multires Registration module performs robust automated affine image registration employing a multi-resolution scheme.

DOF

• rigid 6 DOF:
  • Register Images. Set DOF to PipelineRigid.
• similarity 9 DOF:
• affine 12 DOF:
  • Affine Registration
  • The Multires Registration module performs robust affine image registration employing a multi-resolution scheme.
  • Register Images. Set DOF to PipelineAffine.

• non rigid 27- 100s DOF:
  • The Deformable B-Spline Registration Module performs non-rigid automated image registration.
• non rigid (fluid) >100 DOF
  • The Demons Non-rigid Registration Module performs automated registration of images based on an optic flow mechanism. Deformations here are significantly more "fluid" (i.e. have more DOF and are less constrained) than for the BSpline method.
  • The HAMMER Module performs elastic (non-rigid) alignment of brain images of different individuals based on tissue class segmentation and intensity (experimental stage).

Datatype

• images, same modality: The Register Images Module performs automated image registration, rigid to affine, based on image intensity similarities. It allows to focus the registration on a region of interest
• images, different modality: The Register Images Module performs automated image registration, rigid to affine, based on image intensity similarities. Select Mutual Information as cost function.
• surfaces: The ICP Surface Registration Module performs automated registration of surfaces (not images). This is useful if image data directly is unreliable, but surfaces can be produced from segmentations that provide good information about desired alignment.
• fiducials: The Fiducial Alignment Module can align images based on pairs of manually selected fiducial points (rigid and affine). Two sets of fiducials (fiducial lists) are required, forming matching pairs to be aligned. See Fiducials module below.

Brain

• The ACPC Transform Module is used to orient brain images along predefined anatomical landmarks: (manually defined) fiducials for the inter-hemispheral midline, anterior- and posterior commissure are used to align an image such that these landmarks become vertical and horizontal, respectively.
• BrainsDemon
• BrainsMush
• BrainsFit
• The HAMMER Module performs elastic (non-rigid) alignment of brain images of different individuals based on tissue class segmentation and intensity (experimental stage).